When it comes to the strongest strength in the cultivation world, it is undoubtedly the Xundao Sect. That is beyond question.
However, when it comes to the most terrifying sect, it is the Mind-Observing Tower.
Qin Xin had mentioned before that Cai Le, a former sect master of the Mind-Observing Tower, had actually concealed himself beside an imperial prince for certain objectives, and the Emperor's Hatred was born as a result. From this, one could see that the Mind-Observing Tower was not a sect that followed the beaten path; they were even more unscrupulous in achieving their goals.
Chapter 379